WASHINGTON – With the established global order on shaky footing, President Donald Trump's weeklong trip to Europe will test already strained bonds with some of America's closest allies, then put him face to face with the leader of the country whose electoral interference was meant to help put him in office. Trump departs Tuesday on a four-nation tour amid simmering disputes over trade and military spending with fellow Western democracies and speculation about whether he will rebuke or embrace Russian President Vladimir Putin. He meets the Russian leader in Helsinki as the finale of a trip with earlier stops in Belgium, England and Scotland. Trump has shown little regard for America's traditional bonds with the Old World, publicly upbraiding world leaders at NATO's new headquarters a year ago for not spending enough on defense and delivering searing indictments of Western trading partners last month at an international summit in Canada. On this trip, after meeting with NATO leaders in Brussels, he'll travel to the United Kingdom, where widespread protests are expected, before he heads to one of his Scottish golf resorts for the weekend.